<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div class="a">
      <div class="b">
        <div class="c"></div>
        <div class="d"></div>
      </div>
      <div class="e">
        <div class="f"></div>
        <div class="g"></div>
        <div class="h"></div>
        <div class="i"></div>
        <div class="j"></div>
        <div class="k"></div>
      </div>
    </div>
  </body>
  <style>
    .a {
      width: 1100px;
      height: 400px;
      background-color: turquoise;
    }
    .b {
      width: 200px;
      height: 400px;
      background-color: yellow;
      float: left;
    }
    .c {
      width: 200px;
      height: 200px;
      background-color: red;
      float: left;
    }
    .d {
      width: 200px;
      height: 200px;
      background-color: blue;
      float: left;
    }
    .e {
      width: 900px;
      height: 400px;
      background-color: green;
      float: left;
    }
    .f {
      width: 500px;
      height: 200px;
      background-color: purple;
      float: left;
    }
    .g {
      width: 150px;
      height: 200px;
      background-color: orange;
      float: left;
    }
    .h {
      width: 250px;
      height: 200px;
      background-color: pink;
      float: left;
    }
    .i {
      width: 300px;
      height: 200px;
      background-color: brown;
      float: left;
    }
    .j {
      width: 300px;
      height: 200px;
      background-color: gray;
      float: left;
    }
    .k {
      width: 300px;
      height: 200px;
      background-color: navy;
      float: left;
    }
  </style>
</html>
